Equivalent to 4eb3c1b, designed to sound like vintage tanks. Is it possible beneficial to use both triodes in parallel to drive the reverb. Four counterwound and coupled springs deliver superior mechanical performance and the classic sound that helped make the fender twin reverb amp famous. Watford valves amp parts accutronicsbelton reverb tanks.
The fender reverb unit 6g15 was a vacuum tube, spring reverbequipped effects unit made by fender. Spring reverb tanks explained and compared antique electronic. The tank has a long decay time for players who are looking for heavy surf style reverb. The output of the reverb tank is sent to the reverb recovery amp, it is also a 2n3906 class a low noise. Bought this tank for a fender proreverb which had a broken tank. From the schematic floating around online, this amp has a reverb driver transformer with an 8 ohm secondary.
This movie is locked and only viewable to loggedin members. Avoid mounting the outer channel of the reverb tank directly to the mounting surface by using grommets, rubber standoffs, reverb tank bag and liner or other products designed for mechanical isolation. Accutronics 4fb3d1b reverb tank long decay for music man amps. But that is not the only way to drive a reverb tank using a vacuum tube, and in fact it is not the best way. I was thinking of substituting a high input impedance tank such as the 4fb3d1b which is used in the ampeg vt22 which is coupled with a capacitor rather than a transformer 1,475 ohm input, 2,250 ohm. Accutronics reverb tank numbering amp repair parts. I finally had a chance to experiment a bit more with the amp. Here is a comparison between the four different reverb tank brands discussed previously. The accutronics tank was working, but it wasnt producing as much reverb as it should have been and had begun to feed back if i set the reverb at 7 or higher.
It was discontinued in 1966 and was replaced by a solidstate model, the fr. These tanks are designed to replicate the sound of vintage reverbs and are great replacements. Assuming the 35rvt used the same reverb tank as your 30rvt it does use the same e6400 reverb driver transformer, according to the schematic, it looks like your choices are 4fb3d1b 2 spring pairs, 1475 ohm input, 2250 ohm output and the 9fb2a1b 3. Revisit reverb tank, 17 long, 2 spring, equivalent to accutronics 4fb3d1b.
Accutronics 4ab3c1b reverb tank accutronicsbelton reverb tanks 4ab3c1b is the reverb tank that was used in nearly all the great fender amplifiers from 1963 on. So does anyone know or have tried swapping 8eb2c1b for 8gb2c1b i think the 8e goes in the blues jr. It took me a little bit to figure out that, when i plugged in the rca cable into one of the jacks on the new tank, the metal receiving part on the inside of the tank broke off it may have been broken in the transit, i wasnt looking for broken parts before i. The tank is accutronics 8gb2c1b the second digit only goes to e on all the code charts.
Reverb tanks are available with input impedances from 8 ohms to a few k ohms. This mod tank sounds far better than the accutronics tank i replaced. Typically in fenders used with a 12at7 tube with 2 sections run in parallel, but could be used with tubes such as 6bq7, 12au7, or 6sn7. We import all our products, that makes us possible to keep good prices and short delivering times. Revisit reverb tanks bringing back the sound of vintage accutronics tanks. Assuming the 35rvt used the same reverb tank as your 30rvt it does use the same e6400 reverb driver transformer, according to the schematic, it looks like your choices are 4fb3d1b 2 spring pairs, 1475 ohm input, 2250 ohm output and the 9fb2a1b 3 spring pairs, 1925 ohm input, 2575 ohm output. The only goofy thing i had was the inputoutput cables on my amp were backwards from what was on the tank, but that is probably the amp and not the tank. Thanks for looking in and happy bidding original 1965 gibbs spring reverb tank pan unit. Accutronics products and specifications amplified parts. Products our plans free trial academic solutions business solutions government solutions. The mod reverb tanks are high quality upgrade units. All our customers gets free technical consultation from us, service that only few companies can offer. If you can find a reverb tank with a high impedance driver coil, the transformer may be eliminated, the driver coil will require isolation from ground. The only goofy thing i had was the inputoutput cables on my amp were backwards from what was on the tank, but that is.
Im sure you could change the caps in the reverb section to do something but it may. Dwell, mixer and tone and includes a 12at7 tube as a preamplifier. Thanks for looking in and happy bidding original 1965. Accutronics 4bb3c1b reverb tank accutronicsbelton reverb tanks 4bb3c1b is used by fender in the original blues deville 4 x 10. Mod 4eb3c1b long decay reverb tank for fender new in the. The 4ab3c1b 2spring reverb tank is used a wide variety of amplifiers. Replaced mod tank that was selfoscillating due to the second spring vibrating continuously. When i first installed the tank, the reverb still wasnt working.
Reverb tanks cabinets vacuum tubes speakers tolex and tweed grillcloth transformers test equipment vacuum tube accessories chassis baffles adhesives glues capacitors resistors turret eyelet boards back panels cabinet hardware amplifier kits bias testers faceplates knobs capacitor kits covers logos pilot lights pots reverb accessories reverb tanks capacitor pans. Twin reverb, deluxe reverb, princeton reverb, super reverb, vibroverb, vibrolux reverb, pro reverb. Accutronics 4fb3d1b reverb tank made usa nos reverb. I finally bit the bullet and took the amp to a tech. The output of the reverb tank is sent to the reverb recovery amp, it. Reverb is such an important part of an amps sound and there is nothing worse than a broken or faulty reverb tank and they are simple to replace and just not that expensive. A transformerless constantcurrent reverb driver introduction. Mojotone 4fb3d1b reverb tank for ampeg and music man amps. This is the standard tank used in fender amps which as also use reverb driver transformer with an 8 ohm secondary. Accutronics reverb tank, 17 long, 2 spring, 4ab3c1b current production.
Im not sure if it will definitely work but the first tank i would try is the 4ab3c1b. We carry belton, mod and accutronics in the following models 4bb2a1b, 4eb2c1b, 4fb3d1b, 4ab3c1b, 4ab3c1b, 4bb3c1b, 4bb3c1d. Direct fit and replacement for my fender performer combo. Input impedance 800 ohms, output impedance 2575 ohms, long decay 2. Tad reverb cans tad products tube amp doctor onlineshop. Uraltone amplifcation offers great selection of components and replacement parts for all kinds of musical electronic equipments. A follower whether tube, bjt or mosfet is used when you want to transform an rather high impedance tube plate into a low impedance reverb tank. First the tech replaced the tube socket in v3 because it looked corroded. Reverb tank bag fender, for 17 reverb tanks original fender reverb tank bag for 17 tanks. Accutronics 8fb3c1c rg25r manufactured for soundtech.
Compatible amps include peavey bravo 112, encore 65, classic 30, backstage 30, valveking 100, windsor studio replaces peavey part number 71011114. Some of the major differences between the mods and other reverb tanks are that the transducers are wired directly to. This type was the original style selected by leo fender. Reverb tank accutronics, 4ab3c1b, long decay, 2spring. The number and density of reflections increases rapidly with time and. The type 4 is 17 long and uses 2 long springs, each of which consists of two springs joined in the middle. You can do much about the tank length, but a long delay may make a difference. The industry standard for years, the type 4 is still manufactured today using hammonds original design. Vacuum tube reverb circuits traditionally have used a lowimpedance reverb tank coupled to the driver tube by a small output transformer. Reverb tanks cabinets vacuum tubes speakers tolex and tweed grillcloth transformers test equipment vacuum tube accessories chassis baffles adhesives glues capacitors resistors turret eyelet boards back panels cabinet hardware amplifier kits bias testers faceplates knobs capacitor kits covers logos pilot lights pots reverb accessories reverb tanks capacitor. Carvin vintage 16 accutronics 8gb2c1b fender stratocaster. Just considering a possible use for the unused triode. Kalamazoo amplifiers which used a driver transformer for the reverb input side.
Evatco has sourced a wide range of reverb tanks and even a few digital reverb units which are quite good to use. I try with a tank reverb of classic 30 peavey and its the same problem, can you send me a picture of complet assembly of you original spring and. Most spring reverbs are made from accutronics or are copies of this old standby. Built the stage center as a stand alone unit with the spring reverb tank inside it was a pedal that is about 35 cm long by 15 cm high and wide. Thus, accutronics considers this model a 4spring unit. Type 4, 600 ohm input, 2,250 ohm output, long decay, 2 spring. Input impedance 8 ohms, output impedance 2250 ohms, long decay 2. The length of time required for the arrival of the very first reflections is called the delay time usually on the order of tens of milliseconds, e. Reverb tank mod, 4fb3d1b, long decay, 2spring amplified. The reverb tank should be isolated from vibrating surfaces as much as possible. Worth the few extra bucks,accutronics is the classic longspring reverb sound. Im not sure if this will go with your tank, but late 60s ss voxs with verb are the surfiest i ever met, by far.
Spring reverb tanks explained and compared antique. It sounds a lot like the old accutronics reverb tanks that were made before the company started producing junk. Tad reverb cans reverb cans effects parts for amplifiers. Primarily used by all fender amplifiers with tube reverb from 19631990. Select early models of the roland jc120, jc120ut, bolt 60, roland space echo. Merlin addresses a parallel 12at7 current driver under cheap current source drivers. Revisit reverb tank, 17 long, 2 spring, equivalent to accutronics 4ab3c1b. About us linkedin learning about us careers press center become an instructor. Accutronics 8fb3c1c rg25r 3spring reverb tank compact 3spring reverb tank, used in musical instrument and small pa amplifiers. I placed a 1uf cap across r33 the cathode resistor of the reverb driver tube.
Vintage danelectro reverb unit help needed the gear page. Up for auction is an accutronics 4eb3c1b reverb tank and a fender hot rod deluxedeville style solid state reverb driver circuit. I found a tank in germany but not worth the price plus shipping and conversion to us dollars. Add to cart add to cart add to cart add to cart customer rating. Excellent quality and perfect sound,4 second decay time accurate and slight treble increase as expected from longspring tanks. Imagine you are inside a large hall and you clap your hands once. Reverb tank mod, 4fb3d1b, long decay, 2spring antique. It only uses one triode of the 6sn7 for driving the reverb tank.
Revisit reverb tank, 17 long, 3 spring, replacement for accutronics 9eb3c1b and belton bl3eb3c1b. The amp was missing the reverb tank when i got the amp so i dont know what it sounded like before, but it sounded great when i got the tank in the amp. The reverb tank is replaced by a classical tank, i have no nsound when i place the mix to 10, i have no kkkrraasssh when i broke the spring, i think is not a good impedance of transducteur. This amp had lived a hard life before i got it, and this was a great way to get the stock reverb, with true analog spring tank sound, back and working like it left the factory. The usual choice for a tube amp is something in the 1 to 5 k ohm range, which can be driven from a dc blocked tube plate. The same reverb tank will sound different depending on the amp. Used in the gibson ga30rv, ga60rv and vox ac30tbr vintage top boost reverb 19911993. Reverb tank 9ab2c1b fender 3 spring medium delay allparts uk. I replaced the reverb tranny, reverb tank, reverb cables, and reverb driver tube and nothing changed. In comparing the sound characteristics of reverb tanks it is important to remember that the amplifier plays a major role in how the reverberation effect will sound. Used in fender blackface and silverface amps that had reverb. I put it right before the amplifier if using it as a reverb unit for guitar.